Jewelry snap fastener



A. KNOPF. JEWELRY SNAP FASTENER.

APPLICATION FILED MAR- 26. 1920.

1,405,227. Patented Jan. 31', i922.

- 22. INVENTOI? ATTORNEYS.

AUGUST knees, or nnwaamnn w JERSEY, ASSIGNOR ro rninvx wr'neixnn; OF 7 IRVINGTON', NEWJEESEY.

JEWELRY. SNAi? rasrrnivna.

T 0 dll whom it may concern:

Be it known that 1, A GUST Know, a citi zen of the United. Statesyand' a resident of Newark, in the county of'EsseX and State of New Jersey, have invented new and useful Improvements 1n Jewelry; Snap Fasteners,

, of which'the following is a speoificati'on;

This invention relates in general tosn'ap fas'temars' and more particularly to snap fasteners such as are used on locket 'fch'ains, necklaces, bracelets, and the like, to fasten the ends of the chains or the like together for applying the same to thewe arer'or removing them; I I E f [The objects of'the invention are to provlde a fastener of -vth'e character describedand embodying a skeleton-or open-workiconstruction to serve as an effective settlngfor gems or precious stones, and, admitting. light; beneath the gems to produce a brilliant lustre and enhance the appearance of the gems to provide a fastener for locketchains, necklaces and the like formed of a pair of rel'atively slidable but inseparable parts whereby the ends ofthe chainorfthe like may be sepa rated by slight relative movement of the parts of the fastener; toprovide such a fastener in which one part serves asa closure for a hook carried-by the other part to nor mal-ly prevent disconnection of the endof.

the chain from-the hook; to provide. Ifasten ing means for normally preventing relative sliding of the parts of the fastener; toi secure simple and novel means for limitlng the sliding imoveinent of the parts of the fasteners and prevent separation thereof; to pro vide a fastener of this character which embodies a minimum amount of material and which is simple and reliable in construction and operation; andf-to obtain other advanaj tages and results as may;bebrought out by the following description I j Referring to the accompanying drawings,

in. which like numerals of reference-indicate the same parts throughout the several views,

Figure 1 is a topplanxview of a snap: fas-;

tener embodyingmy invention showing the fastener 1n 'closedposltion 1 Figure 2 1s a side elevation thereof;

Fig'ure 3 is a llOllZQHtLli sectional- View taken on line 3- -3 Fig. 2;; Y

Figure-4e is abottomplan view thereof;

Figure 5 is'a side elevation showing the fastener inan open position; F1gure G s a transverse vertical sectional view on the line 6' 6 of Fig.6;

Figure 7 is a plan v ew offamodifiedform i of the fastener, and

Figure 8 is atransverse,sectional view m o r 7 the line 8.8 of'FigT. a Inthe embodiment of theinventionvshown by Figures 1-6 inclusivefthe numeral 1 des ign'atfes. the body portion ofthe fastener,

which'iin the, presentinstance is shown as substantially elliptical or oval in configura tion, the said body portion being provided with a slid'eway 2 intermediate its; thickness, said slid'eway being arrangedparallel. to the major axis of the body portion and having: i

a pair spaced: and parallel guide grooves 31nwhlch s slidably' mounted a fastener fastener slide 4 issubstan-tiall y:fi at and Ll-shaped in formation, the arms; 5 thereof being resilient springing into the g.u1degro0ves;3 and frictionally" engag ing' the same theendsof the-slide. l w-hen the slide" is in a normally closed" position within the'body portionl projecting beyond the ends of'the body-portion The closed end of the slide .4. is provided with an eye G'to which. is permanently secured oneend 7 of, the locket chain or necklace- 8.; Ad-ja,

cent the votherlends ofthearms 5c of the slide are formednotchesfi adapted to receivelulgs e 10: projecting. inwardly from the ends of 1:

guide grooves lg-the said notches :9 and lugs 10 when in engagement serving to 'l ock. the slide at within the body portion and prevent sliding movement thereof, The free extrem} ity of one'ofthe arms 5 of the slide 45 ispro-e vided wlth a hook 1 1 towhich is adapted to be fastened by means of a ring 12the oppositeend ofthe chain or necklace 8 the end of saidthookbeingadapted to engage the end of the body portion 1 to prevent 'disconnec tion ofthe ring 12 from the hook whenthe slide 4: is in closed;- position with the; lugs 10;," i' engaging the' notches 9;] This hook 11 may 1 also serve as astop to limit theslic'ling movea mentof the slide l into thei body portion;v or

the; arms of the slide.- may be provided with shoulders "13 adapted to engage the. ends :of i the guide grooves 3 to limit such "movement;

For the purpose of facilitating the sliding of the fastener slide e in the body portion the free extremities of the arms are provided with finger nail notches 14 by'means' of thefastener may be varied in "numerous of whiclt he; slide 4 may be grasped.

Where the shoulders 13 serve'to limit sliding, they project further apart than the arms 5, 5 so that the notches 9 can be cleared from the lugs lO'without disengaging the limitingfshouldersj 13,;ahd' to prevent anypossibility of the limiting shoulders being pinched near enough together to allow the slide to escape from the slideway, a stop 24,

(see Figure 3) ,is provided between the arms to limit their approach to each other so that while they may be' compressed near enough for the recesses 9 to clear the lugs 10 the shoulders 13 never permitfthe slide to pass themu a I g Assuming the slide 4 to be in a closed position asshown by Figures 14.- inclusive,'

@d fi it i id ir t s c e her g" 12 upon'the hook 11,the slide 4t is grasped by the fingers "of the operatorin the notches 1 1;

and the arms 5 of the slide pressed toward each other which releases the notches 9 from the lugs 10. v The slide& isthenpulled out? wardly until movementisstopped by en- 1,- as shown by Figure 5., whereupon the hooldll is moved away from the end of the body portion 1 so that the ring '12'can' be inserted in thehook." The slide is'then pushed the opposite directioninto the body portion 1 until the shoulders 18; or thehookll engagethe end of the body portion '1', which limits the movement of the slide 4:

in this direction, and the spring action of thearins 5 then causes the notches 9 to snap overthe lugs 10 to lock the slide 4 in the bodyportion. It will thus be seen that the two members 1 and 1 comprising the fas tener are not separated at any time forthe purpose of disconnecting the ends of the chains, and that a very slight movement of the ;fastener slide 1 is required to enable the chain limits of the movement of the slide 1 toward the unlocked position. r

Oneobject of this construction is to adapt the fastener as a gem setting, and for this purpose the under side 15 of the body portion'l is provided with acut away portion or opening 16 of a width substantially equal to the distance between the arms 5 offthe slide :4, and ofa length equalto substantiallythe length ofthe bodyportion '1. The

opposite side of the body portion is provided with a'plurality of gem-receiving openings '17 adapted'toservejassettings for suitable em s48; and it will thus be seen that light gagementof the end 7" of the chain 8 with the corresponding end of the body portionv the gems 18 so as to enhance the brilliancy and lustre of the gems. V

The configuration of the body portion 1 ways, andonemodification of the same is shown by Figures 7 and 8 in which the body portion '19 is substantially rectangular and 'is provided at one side thereof with an open ingQO'corresponding to the opening] 16 of the body portion 1, and at the opposite side thereof with an opening 21 adapted toreceive a gem or the like, The fastener: slide 22 is identical inconstruction and operation with the fastener slide 4: above described,

and is mounted in guide grooves 28 formed" in the body portion 19 similarly to the guide grooves 3 of the body portion 1. Itwill also be noted that this' skeletonf like construction reduces the amount of material usedlin the constructioncof the fastener and also reduces the weight and bulk thereof, thusproducing' a comparatively inexpensive fastener. a.

Obviously-many modificationsandchanges can be madelin the construc tionfofmy improved fastener by those skilled, in the art without departing from the spirit or scope of the invention, and I do not gdesire'to' be limited in the use of my inventionhexcept as required by the following claims when con strued in the light of the prior arti, j

': Having thus described the invention; what 'Q aim iszh V .l

1. In a fastener of thecharacter' described; h i om t o b dy port o p ov ding asli' way',f a sl e nsaid isl f way, lo king mean alw y lo d: y thebody peti ion. d "n ma y hold ng "th fisl d again t mo e nt. eans fo un1ockingsa s i e n means at he; oppos e, .l fwe s fe tt c i g thei d of i hain l I I a a te er Y f1 e ha ter de ribe he combination o a bodyr on proridm i a slideway open 'at its opposite ends; a slide r sa t a m in s id s i eway' adep ed'toresiliently engage therewith to 'pre ent sliding, andmeans at theiopposite ends of V said slide for attachingthegendsof thereto independent ofsaid slideway V V 3. In afastener ofthe character described, the combination of a body portionproviding a slideway open at its opposite ends, a dou bled slide in said slidewayfhaving near free end of oneof its armsmea-ns fo -ren gagement with the body portion to prevent arniandat thedoubled end of the slide for I the combination of a body portionproviding a slideway openat its opposite ends, a p a Ushaped's'lid having-near the free end of one of its arms meansforengagement with the body portion to prevent slidin ghi and 120 sliding,landmeans attheendoftheiother c means at the end of the other arm and at the doubled end of the slide for attaching the ends of a chain thereto independent of said slideway.

5. In a fastener of the character described, the combination of a body portion providing a slideway, a slide in said slide- Way, locking means always enclosed by the body portion and normally holding the slide against movement, means for unlocking said slide, stops on said slide for limiting sliding thereof, and means at the opposite ends of the slide for attaching the ends of a chain.

6. In a fastener of the character described, the combination of a body portion providing a slideway, a slide in said slide- Way having resiliently diverging-arms, cooperating means on one ofsaid arms and the body portion for preventing sliding,

means on the slide for, limiting sliding, stop means on the arms for preventing release of said limiting means, and means at opposite ends of the slide for attaching the ends of a chain.

7. In a fastener of the character de-' scribed, the combination of abody portion having an opening transversely therethrough and 1 a longitudinally extending slideway, and a fastener slide mounted in said slideway and surrounding the, said transverse opening whereby light is admitted through the said body portion.

8. In a fastener of the character described, the combination of a body portion having an. opening transversely there,- through and a longitudinally extending slideway, and a- U-shaped fastener slidemounted in said slideway with its arms ar- I ranged upon opposite sides of said trans-" verse opening in the body portion to admit light through said, transverse opening.

9. In a fastener of the character de: scribed, the combination of a body portion having an opening transversely there through and a longitudinally extending slideWay, and a fastener slide mountedinsaid slidevvay and surrounding the said transverse opening whereby light is ad initted through the said body portion, said fastener slide being provided at one end thereof with an eye, and the otherend thereof with a hook.

AUGUST KNOPF. I 

